SN74AUP1T34: VCCA and VCCB relationship

Part Number: SN74AUP1T34

Hi Team,

Is  VCCA and VCCB independent to each other?

Customer wants to design VCCA = 3.3V, VCCB = 1.8V, or  VCCA = 1.8V, VCCB = 3.3V, both scenario could be.

Thanks!

Andrew